diff options
Diffstat (limited to 'src/interfaces/odbc/columninfo.c')
| -rw-r--r-- | src/interfaces/odbc/columninfo.c | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/src/interfaces/odbc/columninfo.c b/src/interfaces/odbc/columninfo.c deleted file mode 100644 index 7fe72d3f6d1..00000000000 --- a/src/interfaces/odbc/columninfo.c +++ /dev/null @@ -1,191 +0,0 @@ -/*------- - * Module: columninfo.c - * - * Description: This module contains routines related to - * reading and storing the field information from a query. - * - * Classes: ColumnInfoClass (Functions prefix: "CI_") - * - * API functions: none - * - * Comments: See "notice.txt" for copyright and license information. - *------- - */ - -#include "pgtypes.h" -#include "columninfo.h" - -#include "connection.h" -#include "socket.h" -#include <stdlib.h> -#include <string.h> -#include "pgapifunc.h" - -ColumnInfoClass * -CI_Constructor() -{ - ColumnInfoClass *rv; - - rv = (ColumnInfoClass *) malloc(sizeof(ColumnInfoClass)); - - if (rv) - { - rv->num_fields = 0; - rv->name = NULL; - rv->adtid = NULL; - rv->adtsize = NULL; - rv->display_size = NULL; - rv->atttypmod = NULL; - } - - return rv; -} - - -void -CI_Destructor(ColumnInfoClass *self) -{ - CI_free_memory(self); - - free(self); -} - - -/* - * Read in field descriptions. - * If self is not null, then also store the information. - * If self is null, then just read, don't store. - */ -char -CI_read_fields(ColumnInfoClass *self, ConnectionClass *conn) -{ - Int2 lf; - int new_num_fields; - Oid new_adtid; - Int2 new_adtsize; - Int4 new_atttypmod = -1; - - /* MAX_COLUMN_LEN may be sufficient but for safety */ - char new_field_name[2 * MAX_COLUMN_LEN + 1]; - SocketClass *sock; - ConnInfo *ci; - - sock = CC_get_socket(conn); - ci = &conn->connInfo; - - /* at first read in the number of fields that are in the query */ - new_num_fields = (Int2) SOCK_get_int(sock, sizeof(Int2)); - - mylog("num_fields = %d\n", new_num_fields); - - if (self) - /* according to that allocate memory */ - CI_set_num_fields(self, new_num_fields); - - /* now read in the descriptions */ - for (lf = 0; lf < new_num_fields; lf++) - { - SOCK_get_string(sock, new_field_name, 2 * MAX_COLUMN_LEN); - new_adtid = (Oid) SOCK_get_int(sock, 4); - new_adtsize = (Int2) SOCK_get_int(sock, 2); - - /* If 6.4 protocol, then read the atttypmod field */ - if (PG_VERSION_GE(conn, 6.4)) - { - mylog("READING ATTTYPMOD\n"); - new_atttypmod = (Int4) SOCK_get_int(sock, 4); - - /* Subtract the header length */ - switch (new_adtid) - { - case PG_TYPE_DATETIME: - case PG_TYPE_TIMESTAMP_NO_TMZONE: - case PG_TYPE_TIME: - case PG_TYPE_TIME_WITH_TMZONE: - break; - default: - new_atttypmod -= 4; - } - if (new_atttypmod < 0) - new_atttypmod = -1; - - } - - mylog("CI_read_fields: fieldname='%s', adtid=%d, adtsize=%d, atttypmod=%d\n", new_field_name, new_adtid, new_adtsize, new_atttypmod); - - if (self) - CI_set_field_info(self, lf, new_field_name, new_adtid, new_adtsize, new_atttypmod); - } - - return (SOCK_get_errcode(sock) == 0); -} - - -void -CI_free_memory(ColumnInfoClass *self) -{ - register Int2 lf; - int num_fields = self->num_fields; - - for (lf = 0; lf < num_fields; lf++) - { - if (self->name[lf]) - { - free(self->name[lf]); - self->name[lf] = NULL; - } - } - - /* Safe to call even if null */ - self->num_fields = 0; - if (self->name) - free(self->name); - self->name = NULL; - if (self->adtid) - free(self->adtid); - self->adtid = NULL; - if (self->adtsize) - free(self->adtsize); - self->adtsize = NULL; - if (self->display_size) - free(self->display_size); - self->display_size = NULL; - - if (self->atttypmod) - free(self->atttypmod); - self->atttypmod = NULL; -} - - -void -CI_set_num_fields(ColumnInfoClass *self, int new_num_fields) -{ - CI_free_memory(self); /* always safe to call */ - - self->num_fields = new_num_fields; - - self->name = (char **) malloc(sizeof(char *) * self->num_fields); - memset(self->name, 0, sizeof(char *) * self->num_fields); - self->adtid = (Oid *) malloc(sizeof(Oid) * self->num_fields); - self->adtsize = (Int2 *) malloc(sizeof(Int2) * self->num_fields); - self->display_size = (Int2 *) malloc(sizeof(Int2) * self->num_fields); - self->atttypmod = (Int4 *) malloc(sizeof(Int4) * self->num_fields); -} - - -void -CI_set_field_info(ColumnInfoClass *self, int field_num, char *new_name, - Oid new_adtid, Int2 new_adtsize, Int4 new_atttypmod) -{ - /* check bounds */ - if ((field_num < 0) || (field_num >= self->num_fields)) - return; - - /* store the info */ - self->name[field_num] = strdup(new_name); - self->adtid[field_num] = new_adtid; - self->adtsize[field_num] = new_adtsize; - self->atttypmod[field_num] = new_atttypmod; - - self->display_size[field_num] = 0; -} |